﻿#region Copyright
// Copyright (c) 2011-2012 RaisingForce Team (Alikin Sergey)
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Diagnostics.Contracts;

namespace RaisingForce.Raise.Language.Model
{
    sealed public class NumberGlyph :
        Glyph
    {
        #region Constructors

        internal NumberGlyph(int number)
            : base(
                NumberGlyph.Name,
                NumberGlyph.getNumberString(number))
        {
            if (NumberGlyph.MinValue > number
                || number > NumberGlyph.MaxValue)
            {
                throw new ArgumentOutOfRangeException("number");
            }
            Contract.EndContractBlock();
            this.number = number;
        }

        #endregion

        #region Private Declarations

        private readonly int number;

        private static string getNumberString(int number)
        {
            Contract.Requires(NumberGlyph.MinValue <= number);
            Contract.Requires(number <= NumberGlyph.MaxValue);
            Contract.Ensures(Contract.Result<string>() != null);
            return number.ToString();
        }

        [ContractInvariantMethod]
        private void ObjectInvariant()
        {
            Contract.Invariant(NumberGlyph.MinValue <= this.number);
            Contract.Invariant(this.number <= NumberGlyph.MaxValue);
        }

        #endregion

        #region Constants

        public const string Name = "Value";

        public const int MinValue = 1;

        public const int MaxValue = 9;

        #endregion

        #region Properties

        public new int Value
        {
            get
            {
                Contract.Ensures(NumberGlyph.MinValue <= Contract.Result<int>());
                Contract.Ensures(Contract.Result<int>() <= NumberGlyph.MaxValue);
                return this.number;
            }
        }

        #endregion
    }
}
